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Cheap flights from White Plains to St. Louis from $156

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from White Plains to St. Louis departing on 9/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from White Plains to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:40 pm - 11:42 pmHPN  White Plains Westchester County-STL Lambert-St Louis
6h 02m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:05 am - 2:29 pmSTL  Lambert-St Louis-HPN White Plains Westchester County
6h 24m1 stop Atlanta Hartsfield-Jackson
$311Delta
Wed, Sep 23 - Sat, Sep 26
Delta Logo
12:36 pm - 4:38 pmHPN  White Plains Westchester County-STL Lambert-St Louis
5h 02m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:40 am - 11:56 amSTL  Lambert-St Louis-HPN White Plains Westchester County
4h 16m1 stop Detroit Metropolitan Wayne County
$311Delta
Sat, Sep 5 - Sat, Oct 3
American Airlines Logo
10:08 am - 4:27 pmHPN  White Plains Westchester County-STL Lambert-St Louis
7h 19m1 stop Washington, D.C. Reagan-National
American Airlines Logo
11:01 am - 5:05 pmSTL  Lambert-St Louis-HPN White Plains Westchester County
5h 04m1 stop Chicago O'Hare Intl
$311American Airlines
Thu, Sep 10 - Sat, Sep 12
American Airlines Logo
6:00 am - 12:54 pmHPN  White Plains Westchester County-STL Lambert-St Louis
7h 54m1 stop Chicago O'Hare Intl
American Airlines Logo
7:27 am - 3:50 pmSTL  Lambert-St Louis-HPN White Plains Westchester County
7h 23m1 stop Chicago O'Hare Intl
$311American Airlines
Sun, Sep 6 - Sat, Oct 3
American Airlines Logo
3:21 pm - 9:28 pmHPN  White Plains Westchester County-STL Lambert-St Louis
7h 07m1 stop Washington, D.C. Reagan-National
American Airlines Logo
9:32 am - 3:46 pmSTL  Lambert-St Louis-HPN White Plains Westchester County
5h 14m1 stop Chicago O'Hare Intl
$311American Airlines
Mon, Aug 24 - Wed, Aug 26
Delta Logo
4:29 pm - 11:31 pmHPN  White Plains Westchester County-STL Lambert-St Louis
8h 02m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:40 am - 11:56 amSTL  Lambert-St Louis-HPN White Plains Westchester County
4h 16m1 stop Detroit Metropolitan Wayne County
$311Delta
Sat, Sep 5 - Sat, Sep 12
Delta Logo
6:40 pm - 11:54 pmHPN  White Plains Westchester County-STL Lambert-St Louis
6h 14m1 stop Atlanta Hartsfield-Jackson
Delta Logo
10:31 am - 3:48 pmSTL  Lambert-St Louis-HPN White Plains Westchester County
4h 17m1 stop Detroit Metropolitan Wayne County
$311Delta
Wed, Oct 7 - Sat, Oct 17
Delta Logo
6:00 am - 10:51 amHPN  White Plains Westchester County-STL Lambert-St Louis
5h 51m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:25 pm - 10:21 pmSTL  Lambert-St Louis-HPN White Plains Westchester County
6h 56m1 stop Atlanta Hartsfield-Jackson
$311Delta
Sat, Oct 10 - Sat, Oct 17
American Airlines Logo
6:00 am - 12:54 pmHPN  White Plains Westchester County-STL Lambert-St Louis
7h 54m1 stop Chicago O'Hare Intl
American Airlines Logo
5:00 am - 11:29 amSTL  Lambert-St Louis-HPN White Plains Westchester County
5h 29m1 stop Chicago O'Hare Intl
$336American Airlines
Sun, Sep 6 - Thu, Oct 1
American Airlines Logo
6:39 am - 12:46 pmHPN  White Plains Westchester County-STL Lambert-St Louis
7h 07m1 stop Washington, D.C. Reagan-National
American Airlines Logo
11:31 am - 5:24 pmSTL  Lambert-St Louis-HPN White Plains Westchester County
4h 53m1 stop Chicago O'Hare Intl
$336American Airlines
Fri, Oct 16 - Tue, Oct 20

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Delta flights from White Plains to St. Louis

Our best Delta deals on White Plains to St. Louis flight tickets
Delta
Sep 5
HPN12:36 pmWhite Plains Westchester County
5h 02m
1 stop
STL4:38 pmLambert-St Louis
Oct 3
STL6:40 amLambert-St Louis
4h 16m
1 stop
HPN11:56 amWhite Plains Westchester County
$311
Delta
Sep 5
HPN12:36 pmWhite Plains Westchester County
5h 02m
1 stop
STL4:38 pmLambert-St Louis
Oct 3
STL6:40 amLambert-St Louis
4h 16m
1 stop
HPN11:56 amWhite Plains Westchester County
$362
Delta
Oct 7
HPN6:40 pmWhite Plains Westchester County
6h 14m
1 stop
STL11:54 pmLambert-St Louis
Oct 15
STL6:00 amLambert-St Louis
7h 29m
1 stop
HPN2:29 pmWhite Plains Westchester County
$365

American Airlines flights from White Plains to St. Louis

Our best American Airlines deals on White Plains to St. Louis flight tickets
American Airlines
Sep 6
HPN6:00 amWhite Plains Westchester County
7h 54m
1 stop
STL12:54 pmLambert-St Louis
Oct 1
STL5:00 amLambert-St Louis
5h 29m
1 stop
HPN11:29 amWhite Plains Westchester County
$336
American Airlines
Sep 6
HPN7:12 amWhite Plains Westchester County
6h 42m
1 stop
STL12:54 pmLambert-St Louis
Oct 1
STL5:13 pmLambert-St Louis
5h 13m
1 stop
HPN11:26 pmWhite Plains Westchester County
$361
American Airlines
Nov 13
HPN6:30 amWhite Plains Westchester County
4h 39m
1 stop
STL10:09 amLambert-St Louis
Nov 15
STL5:00 amLambert-St Louis
5h 29m
1 stop
HPN11:29 amWhite Plains Westchester County
$381

momondo Fare Finder

 
Customize your flight search to find flights from White Plains to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 9, 2026.
Use the filters below to find and compare flights from White Plains to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Wed 9/23

6:40 pm-11:42 pm

1 stop6h 02m

Lambert-St Louis

Sat 9/26

7:05 am-2:29 pm

1 stop6h 24m

$311
Quickest round-trip

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Sat 9/5

12:36 pm-4:38 pm

1 stop5h 02m

Lambert-St Louis

Sat 10/3

6:40 am-11:56 am

1 stop4h 16m

$311

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Thu 9/10

10:08 am-4:27 pm

1 stop7h 19m

Lambert-St Louis

Sat 9/12

11:01 am-5:05 pm

1 stop5h 04m

$311

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Sun 9/6

6:00 am-12:54 pm

1 stop7h 54m

Lambert-St Louis

Sat 10/3

7:27 am-3:50 pm

1 stop7h 23m

$311

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Mon 8/24

3:21 pm-9:28 pm

1 stop7h 07m

Lambert-St Louis

Wed 8/26

9:32 am-3:46 pm

1 stop5h 14m

$311

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Sat 9/5

4:29 pm-11:31 pm

1 stop8h 02m

Lambert-St Louis

Sat 9/12

6:40 am-11:56 am

1 stop4h 16m

$311

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Wed 10/7

6:40 pm-11:54 pm

1 stop6h 14m

Lambert-St Louis

Sat 10/17

10:31 am-3:48 pm

1 stop4h 17m

$311

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Sat 10/10

6:00 am-10:51 am

1 stop5h 51m

Lambert-St Louis

Sat 10/17

2:25 pm-10:21 pm

1 stop6h 56m

$311

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Sun 9/6

6:00 am-12:54 pm

1 stop7h 54m

Lambert-St Louis

Thu 10/1

5:00 am-11:29 am

1 stop5h 29m

$336

White PlainsSt. Louis

HPN White Plains Westchester County - STL Lambert-St Louis

HPNSTL

White Plains Westchester County

Fri 10/16

6:39 am-12:46 pm

1 stop7h 07m

Lambert-St Louis

Tue 10/20

11:31 am-5:24 pm

1 stop4h 53m

$336

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from White Plains to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, February is the cheapest month to fly from White Plains to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of June is another great option to travel to St. Louis, with average flight prices from White Plains averaging around $325.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $379. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $492. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from White Plains in the evening is the least expensive time of day to depart. momondo users have found prices as low as $385 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $424 per ticket.

How have White Plains to St. Louis flight prices changed over time?

When to book flights from White Plains to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from White Plains to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap White Plains to St. Louis (HPN to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from White Plains to St. Louis

Fastest flight time

4h 25m

Direct flights

None
The fastest flight from White Plains to St. Louis takes 4h 25m
There are no direct flights from White Plains to St. Louis. There are no popular flight routes from White Plains to St. Louis.
Search flight deals

Frequently asked questions about flying from White Plains to St. Louis

  • How far is White Plains Westchester County to Lambert-St Louis by plane?

    Lambert-St Louis is 885.7 mi away from White Plains Westchester County. A reasonable flight in good conditions will take 4h 25m.

  • When did momondo last update prices for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?

    Prices for flights from White Plains Westchester County Airport to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from White Plains Westchester County Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from White Plains Westchester County Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from White Plains to St. Louis?

Best airlines flying from White Plains to St. Louis

Compare and see reviews for airlines that fly from White Plains to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $287Free CancellationRating
7.8
8,495 reviews
Search Delta flights
American AirlinesPriceFrom $325Free CancellationRating
7.1
11,892 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
St. Peters
Maryland Heights
Florissant
Collinsville
Alton
O'Fallon
Clayton
Farmington
Fenton
Wentzville
Festus
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from White Plains to St. Louis?

Finding the right flight to St. Louis from White Plains is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from White Plains to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for White Plains to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from White Plains to St. Louis?

Once you have performed a search for White Plains to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from White Plains to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from White Plains and alert you when they change.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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